WIP: initial attempt at new multi-stage filters
Few fixes to previous commit working.
One more fix for view.
Move to base64 encoding of integration kernels.
Only raw streams also have channels on the dataSource

--CAR
Add decimation factors to DigitalDemod
Add bias to KernelIntegration
Add record saving to DigitalDemod
Add data source and plot scope options to StreamSelector

--CAR
Add record saving to StreamSelector

--CAR